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作者机构:State Key Laboratory of Quantum Optics and Quantum Optics DevicesInstitute of Opto-ElectronicsShanxi University School of Physics and Opto-Electronics TechnologyFujian Normal University
出 版 物:《Communications in Theoretical Physics》 (理论物理通讯(英文版))
年 卷 期:2011年第56卷第9期
页 面:429-434页
核心收录:
学科分类:07[理学] 070201[理学-理论物理] 0702[理学-物理学]
基 金:Supported by the National Natural Science Foundation of China under Grant Nos. 10974125, 60978017, and 60821004 in part by the Educational Committee of Fujian Province (JA09041) Fujian Normal University (2008100220)
主 题:quantum entanglement dynamics concurrence squeezed vacuum state sudden death
摘 要:Quantum entanglement dynamics of two Tavis-Cummings atoms interacting with the quantum light sourcesin a cavity is *** results show the phenomenon that the concurrence disappears abruptly in a finite time,which depends on the initial atomic states and the properties of squeezed *** find that there are two decoherencefreestates in squeezed vacuum fields:one is the singlet state,and the other entangled state is the state that combinesboth excited states and ground states with a relative phase being equal to the phase of the squeezed state.